Prognostic significance of altered p120ctn expression in bladder cancer

Brasil Silva Neto, Gjanje L. Smith, Jessica A. Mandeville, Alex J. Vanni, Chad Wotkowicz, Kimberly M. Rieger-Christ, Egbert Baumgart, Micah A. Jacobs, Michael S. Cohen, Ron Zeheb, Massimo Loda, John A. Libertino, Ian C. Summerhayes

Research output: Contribution to journalArticlepeer-review

12 Scopus citations


OBJECTIVE: To identify the frequency of change in the expression and localization of p120ctn in bladder tumours and its association with clinical outcomes, and to investigate the potential role of p120ctn in the migratory and invasive behaviour of bladder carcinoma cells. MATERIALS AND METHODS: In all, 425 superficial tumour specimens (Ta, Tis and T1) and 305 invasive (T2-T4) tumour specimens from 534 patients were assembled in 10 tissue microarrays. P120ctn immunostaining was scored for intensity and cellular localization and correlated with clinical variables and survival analysis. Knockdown of p120ctn was achieved using small-interference RNA (siRNA) followed by the assessment of migration and invasion behaviour in standard in vitro assays. RESULTS: The expression levels of p120 catenin inversely correlated with pathological tumour stage (P < 0.001), histological grade (P < 0.001), presence of lymphovascular invasion (P = 0.02) but not lymph node (LN) involvement (P = 0.17). Non-membranous localization of p120 ctn correlated with stage (P < 0.001), grade (P < 0.001), lymphovascular invasion (P = 0.04) and LN-positive disease (P = 0.02). A low expression level of p120ctn was linked to a poor outcome in cancer-specific survival analysis. Knockdown of p120ctn using siRNA resulted in a significant reduction in the migration and invasive potential of bladder carcinoma cells. CONCLUSIONS: Our findings suggest that p120 ctn acts as a prognostic factor in bladder tumours and has a primary role to play in the migratory and invasive behaviour of bladder carcinoma cells.

Original languageEnglish (US)
Pages (from-to)746-752
Number of pages7
JournalBJU international
Issue number6
StatePublished - Mar 2008


  • Bladder cancer
  • Tissue microarrays
  • p120

ASJC Scopus subject areas

  • Urology


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